Performance Evaluation of a Window Room Air Conditioner With Microchannel Condensers

[+] Author and Article Information
Man-Hoe Kim

Clark W. Bullard

Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801

J. Energy Resour. Technol 124(1), 47-55 (Mar 25, 2002) (9 pages) doi:10.1115/1.1446072 History: Received June 06, 2000; Revised November 27, 2001; Online March 25, 2002
Copyright © 2002 by ASME
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Schematic diagram of heat exchanger test apparatus
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Definition of geometric parameters for a microchannel heat exchanger
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Cross section of louvered fin geometry
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Schematics of fin geometries for finned-tube heat exchangers (unit:mm)—(a) FT1, (b) FT3
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Circuiting configurations of finned-tube heat exchangers—(a) FT1, (b) FT2, (c) FT3, (d) FT4
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Comparisons of thermal-hydraulic performance for different heat exchangers—(a) heat transfer rates per unit core volume; (b) refrigerant mass flow rates; (c) air-side pressure drops; (d) refrigerant-side pressure drops
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System performance versus refrigerant charge (all the data points are compared to the baseline system with a refrigerant charge of 900 g)—(a) cooling capacity; (b) compressor power; (c) energy efficiency ratio
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Comparison of overall system performance
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System characteristics for different condensers with refrigerant charge—(a) suction temperatures and pressures; (b) condenser inlet and outlet temperatures
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Comparison of cycle characteristics for the system with different condensers



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